Really enjoyed the game so far, played through multiple routes. Enjoyed loads of them.
The route I would say is lacking is the one in which Kane is initially placed in K4 but gets promoted to K5 at the earliest opportunity, which is at the end of E5. This plays out very strangely. Pretty much no characters have any commentary on this shift, you just start playing the dom events as if it had always been. In fact, some characters refer to Kane's prior trip to Atlantis, which is a continuity error in this playthrough as you were never there earlier due to your K4 ranking. Alessandra approaches you at a pool in E6 to try to induct you into the secret sub path, but if you refuse she still turns up at your quarters during E7 as if you had accepted, which neccessitates a loss of any rank gained at the end of E6 to finally (?) refuse her. Either way this just seems to be a way to end up on a dom playthrough but without picking up relevant flags from the earlier episodes.
This particular route is a mess. It doesn't really work. If I were the devs I'd just remove the possibility for K4s to be promoted to K5 at the end of E5, particularly as I've read that there is a plan for K4s to reach K5 at the end of E8. However, I can understand them not wanting to go back and edit E1-E7.